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FAN5350UCX Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part # FAN5350UCX
Description  3MHz, 600mA Step-Down DC-DC Converter in Chip-Scale and MLP Packaging
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5350UCX Datasheet(HTML) 5 Page - Fairchild Semiconductor

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© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5350 Rev. 1.0.1
5
Electrical Characteristics
Minimum and maximum values are at VIN = 2.7V to 5.5V, TA = -40°C to +85°C, CIN = COUT = 4.7µF, L = 1µH, unless
otherwise noted. Typical values are at TA = 25°C, VIN =3.6V.
Symbol
Parameter
Conditions
Min.
Typ.
Max. Units
Power Supplies
Device is not switching, EN=VIN
16
µA
IQ
Quiescent Current
Device is switching, EN=VIN
18
25
µA
I(SD)
Shutdown Supply Current
VIN = 3.6V, EN = GND
0.05
1.00
µA
Rising Edge
1.8
2.1
VUVLO
Under-Voltage Lockout Threshold
Falling Edge
1.75
1.95
V
V(ENH)
Enable HIGH-Level Input Voltage
1.2
V
V(ENL)
Enable LOW-Level Input Voltage
0.4
V
I(EN)
Enable Input Leakage Current
EN = VIN or GND
0.01
1.00
µA
Oscillator
f0SC
Oscillator Frequency
2.5
3.0
3.5
MHz
Regulation
ILOAD = 0 to 600mA
1.775
1.820
1.865
V
VO
Output Voltage Accuracy
CCM
1.784
1.820
1.856
V
tSS
Soft-Start
EN = 0 -> 1
300
µs
Output Driver
PMOS On Resistance
VIN = VGS = 3.6V
180
m
Ω
RDS(on)
NMOS On Resistance
VIN = VGS = 3.6V
170
m
Ω
ILIM
PMOS Peak Current Limit
Open-Loop
(3)
650
800
900
mA
TTSD
Thermal Shutdown
CCM Only
150
°C
THYS
Thermal Shutdown Hysteresis
20
°C
Note:
3.
The Electrical Characteristics table reflects open-loop data. Refer to Operation Description and Typical
Characteristic for closed-loop data.


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